CAS NO:123-99-9 Azelaic acid [ CAS NO. ] 123-99-9 [ Chemical name ] Azelaic acid [ Formula ] C9H16O4 [ Molecular weight ] 188.22 [ Characteristics ] White to slight yellow oblique rhombohedra crystal, needle crystal or powder [ Melting point ] 105-109?? [ Assay ] 99.0% [ Usage ] It's widely used for cosmetics and pharmaceuticals. [ Package ] 25kgfibre drum